Yes micky!
There "May bee" pfed in both the filter and what passed through the filter.
Want to know for sure?
Separate the contents...
Take the contents left in the filter and redissolve in meoh, shake and let settle. Also allow the contents that originally passed through the filter to come to room temp and refilter that solution. Take the now 2nd filter of pseudo + gakk and redissolve this portion in meoh, shake and let settle.
What is the common denominator between both piles?
They both MAY contain some gakk. (Esp if SwiY follows write-ups or attempts to modify it like Swim did)
Pfed is soluble in methanol, most of the gakk remaining at this point is not. Edit:(PEG or POV would bee)
Swim ended up having to do this in the end. There was insoluble sediment because Swim chose to pool everything together. *(Which he shouldn't have)*
Swim ran 4 extractions total. On one of them (the last one) he had to peel a plastic layer off the top of pfed. (exoskeleton plasti-gakk) That became a clue that a recrystalization was necessary. For some bees the gakk may not bee as obvious?
He then syphoned the meoh solution, run through funnel with Charmin and re-evapped for pristine needles.
Lost a little weight in the end. But makes for an excellent finishing step to make sure that you know exactly what you got.
Now it has been covered.
But then again remember, Swim didn't follow the extraction verbatim as was instructed.
He used 120's and if he would have pre-cracked the tombstones with acetone and filtered through a fine mesh metal screen (filtering off the plasti-exoskeletons) and dried the powder prior to extraction with dried IPA/naptha, this may not have been necessary.
Hope this helps with the 120's.
Some people discover helpful tips after the fact.